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20373297 = 371039419
BaseRepresentation
bin100110110110…
…1111100110001
31102100001220120
41031231330301
520203421142
62004400453
7335112240
oct115557461
942301816
1020373297
111055583a
1269a6129
1342b4309
1429c4957
151bc67ec
hex136df31

20373297 has 16 divisors (see below), whose sum is σ = 31349760. Its totient is φ = 11527632.

The previous prime is 20373289. The next prime is 20373317. The reversal of 20373297 is 79237302.

It is not a de Polignac number, because 20373297 - 23 = 20373289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20373247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2547 + ... + 6872.

It is an arithmetic number, because the mean of its divisors is an integer number (1959360).

Almost surely, 220373297 is an apocalyptic number.

It is an amenable number.

20373297 is a deficient number, since it is larger than the sum of its proper divisors (10976463).

20373297 is a wasteful number, since it uses less digits than its factorization.

20373297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9532.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 20373297 is about 4513.6788764820. The cubic root of 20373297 is about 273.1201687552.

The spelling of 20373297 in words is "twenty million, three hundred seventy-three thousand, two hundred ninety-seven".

Divisors: 1 3 7 21 103 309 721 2163 9419 28257 65933 197799 970157 2910471 6791099 20373297